Bore gauge



FIG. 1 is a top plan view of a bore gauge, showing my new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a right side elevational view thereof. 

The ornamental design for a bore gauge, as shown and described. 